feat: add IM admin P1 operations

server/internal/router/genrouter/im_external_config.go

@@ -0,0 +1,7 @@
+package genrouter
+
+import "hotgo/internal/controller/admin/sys"
+
+func init() {
+	LoginRequiredRouter = append(LoginRequiredRouter, sys.ImExternalConfig) // IM外部服务配置
+}